Hi Heather,
I've gotten into the habit of setting my apc to smf settings to the following

Track 9 Drum 2 = (Midi ch9 )
Track 10 Drum 1 = (Midi ch10 )
Track 11 Bass etc
Track 12 Accomp 1
Track 13 Accomp 2
Track 14 Accomp 3
Track 15 Accomp 4
Track 16 Accomp 5

The only reason I set it to them to these channels is that it matches the yamaha psr format ie they use these channels for their accomp. style parts.

Just saves me having to think about it, it's become habit.

best wishes
Rikki